<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
          <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
          <el-aside :width="isCollapes ? '64px':'200px'">
            <div class="toggle-button" @click="toggleCollpse">|||</div>
            <!-- 侧边菜单区域 -->
            <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
       unique-opened    
       :collapse="isCollapes"
        :collapse-transition="false"
        router
        :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单的模块区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsobj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
         <el-menu-item 
         :index="'/'+subItem.path+''" 
         v-for="subItem in item.children" :key="subItem.id"
          @click="saveNavState('/'+subItem.path+'')">
            <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
    </el-menu-item>
       
      </el-submenu>
    </el-menu>
          </el-aside>
          <!-- 右侧内容主体 -->
          <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
          </el-main>
        </el-container>
      </el-container>
</template>

<script>
import Welcome from './Welcome.vue';
export default {
  components: { Welcome },
 
created(){ 
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
},
    data() {
        return {
            // 左侧菜单数据
            menulist:[],
            iconsobj:{
                  '125':'el-icon-user-solid',
                  '103':'el-icon-s-home',
                  '101':'el-icon-s-check',
                  '102':'el-icon-view',
                  '145':'el-icon-paperclip',
            },
            // 是否折叠
            isCollapes:false,
            // 被激活的链接地址
            activePath:''
        };
    }, 

    methods: {
        // 退出按钮
        logout(){
            window.sessionStorage.clear();
            this.$router.push("/login")
        },
        // 获取所有的菜单
      async getMenuList(){
        const{data:res} = await this.$http.get('menus')
        if(res.meta.status!==200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
        console.log(res)
      },
      // 
      toggleCollpse(){
        this.isCollapes=!this.isCollapes
      },
      // 保存链接的激活状态  在应用程序里看到路径
      saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
      }
    },
};
</script>

<style scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items:center;
    color: #fff;
}
.el-header div{
    display: flex;
    align-items: center;
}
.el-header span{
    margin-left: 15px;
}
.el-aside{
    background-color: #333744;
}
.el-menu{
  border-right: none;
}
.el-main{
    background-color: #eaedf1;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>